"use strict";
const arr = [1, 3, 4, 5];
// [[0,1],[1,3],[2,4]]
// console.log(arr.pop());
// let a = ['123', 123, true]
// let n= arr.unshift(12,3,4)
// let n = arr.shift()
// console.log(n);
// let n=  arr.slice(1,2)
// console.log(n);
// let n = arr.splice(1, 2, 3, 4, 5, 1, 21, 12, 3, 123, 21, 312, 3, 21)
// console.log(n, arr);
// console.log(a.fill(1));
// console.log(arr.copyWithin(1,2,3));
// console.log(arr);
// console.log(...arr.entries());
// console.log(...arr.keys());
// console.log(Array.from(Array(10).keys(),(v,i)=>i));
// export{}
